protopine
Pro"to*pine, n. Etym: [Proto- + opium.] (Chem.) Defn: An alkaloid found in opium in small quantities, and extracted as a white crystalline substance.
Pro"to*pine, n. Etym: [Proto- + opium.] (Chem.) Defn: An alkaloid found in opium in small quantities, and extracted as a white crystalline substance.